SAT Subject Physics Practice Question 559: Answer and Explanation

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Question: 559

15. What is the centripetal acceleration on the rim of a wagon wheel of 44 cm diameter if the wagon is being pulled at a constant 2.5 m/s?

A. 10.8 m/s
B. 18.6 m/s
C. 28.4 m/s
D. 32.7 m/s
E. 36.3 m/s

Correct Answer: C


The correct answer is (C). The centripetal acceleration is found with the following equation:

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